Sugar-cane mill.



J. J ARMSTRONG.

SUGAR CANE MILL.

APPLICATION FILED AUG.I0,1915.

1 21 3 5%, Patented Jan. 23,1917.

2 SHEETS-SHEET 1.

12 fizz/ em 02.

J. J. ARMSTRONG.

SUGAR CANE MILL.

APPLICATION FlLED AUG.10.1915. v

Patented Jan. 23, 1917.

2 SHEETSSHEET 2.

JOHN JAMES ARMSTRONG, OF HONOLULU, TERRITORY OF HAWAII.

SUGAR-CANE MILL.

Specification of Letters Patent.

Patented Jan. 23, 12 1117..

Application filed August 10, 1915. Serial No. 44,695.

To all whom it may concern:

Be it known that 1, JOHN JAMns ARM- STRONG, a citizen of the United States, residing at Honolulu, in the county of Honolulu and Territory of Hawaii, have invented certain new and useful Improvements in Sugar-Cane Mills; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to sugar-cane mills having three rollers in triangular arrangement with hydraulics applied to the upper roller, and particularly to such mills in which the angle to the vertical at which the hydraulic pressure is applied may be altered.

It is desirable that the hydraulic jacks operate at the angle to the vertical corresponding with that of the line representing the resultant of the spreading strains between the rollers. The separating force between the upper roller and the front or feed roller in a three-roller sugar-cane mill is always less than that between the upper roller and the rear or discharge roller, so that the resultant is always inclined to the vertical. As this inclination is not the same in all mills, due to the varying conditions under which the mills operate, means have been provided for altering the angle at which the hydraulic jacks operate.

The object of the present invention is to provide a three-roller sugar-cane mill in which this adjustment may be easily and quickly accomplished, and the invention is in the nature of improvements in sugar-cane mills of the type shown in U. S. Patent #1,106,301, issued Aug. 1, 1914, to C. J. Hedemann. While it is possible to change the angle of applied hydraulic pressure in this type of mill, yet it is not an easy matter to accomplish this adjustment.

My invention contemplates, a three-roller sugar-cane mill having housings with their upper gaps made wide "near the top caps, said top caps each having a curved bottom and a slot through same, a frame within said gap containing the hydraulic jack and the top roller brass, and means for swinging and for locking the said frame in any desired angular position within the said gap, as will hereinafter more fully appear.

In the accompanying drawings, forming a part of this specification, Figure 1 is a side elevation of a three-roller sugar-cane mill embodying my improvements; Fig. 2 is a view of the upper portion of a housing without the frame which contains the top roller bearing and the hydraulic jack shown in Fig. 1; Fig. 3 is a side view of the lower portion of the said frame; Fig. 4: is a side view of the upper portion of the said frame; Fig. 5 is a sectional view through the center of Fig. 3; and Fig. 6 is a sectional view through the center of Fig. 4.

Referring to the drawings, the upper portion of the housing 7 is inclined to the vertical, preferably about fifteen degrees, and its jaws 7 and 7 b are tapered upwardly, so that the gap between said jaws is made wider at the top, near the cap 8, than heretofore. The cap 8 is secured to the jaws 7 and 7 of the housing 7 by the bolts 9 and 10 respectively or in any other suitable manner. The cap 8 is provided with the vertical slot 11, and its bottom is curved to the arc of a circle struck from or near the axis 12 of the top roller 13 as a center. The shaft 14:, pro vided with the square end lab for turning the shaft by means of a wrench, and with the worm 15, is journaled in the boxes 16 and 17 above the cap 8 and over the slot 11, as shown.

The lower portion 18 of the frame is adapted to fit and be seated in the semi-circular bottom 7 of the gap between the jaws 7 and 7 The upper portion 19 of the frame, which is secured to the upper ends of the lower portion 18 by the screws 20, is curved to fit the bottom of the cap 8, and is provided with a lug 19 which projects upward through the slot 11 in the cap 8 and terminates in the segment of a worm-gear 19? which is adapted to mesh with the worm 15.

The top roller journal brass 21. is adapted to be guided by and to slide within the lower portion 18 of the frame with the movement of the top roller 13. The ram 22 of the hydraulic jack 23 engages the steel shoe 24 which distributes the pressure upon the top roller journal brass 21. The top of the hydraulic jack 23 engages the bottom of the upper portion 19 of the frame and is connected in the usual manner with a hydraulic accumulator.

It will now be noted. that the frame may, when the pressure is ofi the ram 22, be easily and quickly turned in the gap between the jaws 7 and 7 about the axis 12, by turning the shaft 14; that the angle to the verticpi at which the hydraulic pressure is to be applied may thus be easily and quickly increased or diminished; and that the fame is automatically locked by the worm 15 and the worm-gear segment 19" in the desired position when thus adjusted.

The angle of inclination from the vertical may be read by means of a pointer 25 and a scale 26 attached to the upper portion 19 of the frame and to the top cap 8 respectively.

I claim:

1. In a sugar-cane mill having three rollers in triangular arrangement. a housing, a top cap secured to said housing, said cap provided with a curved bottom and a vertical slot, the jaws of said housing tapered to provide an upper gap wider at its top than near its bottom, a frame within said gap, a top roller journal brass and a hydraulic jack operating within said frame, and means for swinging and for locking said frame in any angular position within the said gap, substantially as and for the purpose described.

2. In a sugar-cane mill, three rollers, a housing provided with an upper gap wider at its upper end than at its bottom, a top cap secured to said housing and provided with a slot through same and with a curved bottom, a frame in said gap containing a hydraulic jack and a top roller journal brass and provided at its upper end with a lug terminating in the segment of a worm-gear projecting through said slot in the top cap, a shaft provided with a worm and journaled above said cap, the said worm meshing with the said worm-gear segment, substantially as and for the purpose described.

3. In a sugar-cane mill, three rollers disposed in triangular relation, a housing provided with an upper gap, a frame movable in said gap in the plane of the housing, a hydraulic jack carried by said frame for imposing pressure on the top roller, and means to shift said frame in said gap comprising a worm associated with the housing, and a toothed member associated with said frame for cooperation with the Worm.

4. In a sugar-cane mill, three rollers disposed in triangular relation, :1 housing provided with an upper gap, a frame movable in said gap in the plane of the housing, a hydraulic jack carried by said frame for imposing pressure on the top roller, and means to shift said frame in said gap comprising an actuating part associated with the housing, and an actuated part associated with the frame. i

5. In a mill of the kind described, a housing having a gap with a semi-circular bottom and a wide top, and a cap provided with a vertical slot and a curved bottom, substantially as described.

6. In a mill of the kind described, a hous ing provided with a wide gap, a cap with a vertical slot and a curved bottom secured to said housing above said gap, and a frame within said gap, substantially as and for the purpose described.

In testimony whereof I aflix my signature, in presence of two witnesses.

JOHN JAMES ARMSTRONG. Vitnesses:

P. H. BURNETTE, Row. J PRATT. 

